.collapse-ul {
	box-shadow: 2px 2px 2px #888888;
	background: #fff;
	opacity: 0.8;
	filter: Alpha(opacity=80);
	list-style: none;
	padding: 10px;
	border-bottom: 10px solid #555;
}


/**
			 * 堆叠式子菜单的样式设定 
			 */

.collapse-ul a {
	color: #555;
	opacity: 0.8;
	transition: opacity 1s;
}

.collapse-ul a:hover {
	color: #000;
	opacity: 1;
}